MGE UPS Systems 40-150kVA user manual Installation Procedures, Connections

Comet 40-150kVA

2.5Installation Procedures

The steps to be followed are:

◗Placement of the UPS and associated equipment.

◗Connection of input power, output power, and control cables.

Installation of UPS equipment must be handled by skilled technicians and electrician's familiar with the special requirements of high-energy electrical equipment. We strongly recommend contracting MGE Customer Support Services for start-up of the installed Comet UPS system. Do not allow unqualified personnel to handle or operate the Comet UPS.

Refer to the installation drawings for proper placement and connections of auxiliary cabinets.

2.5.1Placement

Move the Comet UPS, battery cabinets (if any), and auxiliary cabinets (if any), to their final location (see Figure 2-2). For cabinets installed adjacent to each other, alignment is critical to properly install the mechanical and cable interconnections. Allow at least 36 inches clearance above all cabinets for maintenance and cooling.

Figure 2-2: Placement of UPS and other Cabinets.

AUX CAB

UPS

BATTERY CABINET(s)

For side and rear clearances, refer to each cabinet's installation drawing

36" recommended

2.6Connections

Electrical connections and cabinet interconnection will vary depending upon the configuration of your Comet UPS system. Refer to Figures 2-3 & 2-4 and to the installation drawings supplied with your equipment.

CAUTION	Before making any electrical connections, verify that all battery disconnect
	circuit breaker (QF1) are in the “off” position. Customer-supplied upstream
	protective devices and distribution circuits should be OFF.

2.6.1Main AC Input

The connections to be made are the three phases, and ground cables from the utility AC power source to the UPS. The main AC input cables are terminated at the "Main Input" Terminal Block (TB1) for 40-80kVA and the input busbars for 100-150kVA. Complete wiring instructions for your installation are provided on the installation drawings supplied with the equipment.

2.6.2Bypass AC Input (Optional)

The connections to be made are the three phases, and ground cables from the bypass AC input power source to the UPS. The bypass AC input cables are terminated at the "Bypass Input" Terminal Block (TB3) for 40-80kVA and the bypass busbars for 100-150kVA. This option provides a separate AC input source for bypass operation.

2.6.3Remote Emergency Power Off (REPO)

The control connections are available for "Remote Emergency Power Off" (REPO) through a customer-supplied normally closed pushbutton. With REPO connected, the jumper on the "REPO" terminal blocks must be removed.

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